Chapter 4 Preparations for installation
17
O-ring (II)
Prepare an O-ring (II) for sealing the installation section of the reduction gear and motor mounting
flange. The O-rings applicable to the O-ring (II) for the catalog products described in “2.2 Parts codes of
catalog products” are listed in the table below. If an O-ring cannot be used due to the structure, seal the
section using a liquid sealant, etc.
(Reference: “4.2.5 Liquid sealant”)
Table 4-9
(Unit: mm)
(Unit: mm)
Model
O-ring
number
O-ring dimensions
Model
O-ring number
O-ring dimensions
Inside
diameter
Width
Inside
diameter
Width
RV-6E
S100
*1
ø99.5
ø2.0
RV-50C
AS568-169
ø190.17
ø2.62
RV-20E
S120
*1
ø119.5
ø2.0
RV-100C
AS568-173
ø215.57
ø2.62
RV-40E
AS568-258
ø151.99
ø3.53
RV-200C
AS568-277
ø291.69
ø3.53
RV-80E
AS568-263
ø183.74
ø3.53
RV-320C
AS568-281
ø380.59
ø3.53
RV-110E
G190
ø189.3
ø5.7
RV-500C
G460
ø459.3
ø5.7
RV-160E
G220
ø219.3
ø5.7
RV-60
AS568-165
ø164.77
ø2.62
RV-320E
G270
ø269.3
ø5.7
RV-320
AS568-178
ø247.32
ø2.62
RV-450E
G300
ø299.3
ø5.7
RV-450
AS568-276
ø278.99
ø3.53
RV-10C
AS568-048
ø120.37
ø1.78
RV-550
No.3.5-312
*2
ø312.0
ø3.5
RV-27C
AS568-163
ø152.07
ø2.62
*1 Numbers S100 and S120 are the manufacturer’s own standards.
*2 The O-ring of number 3.5-312 is a special type. For purchase of the O-ring, please contact us.
O-ring (III)
Prepare an O-ring (III) for sealing the installation section of the reduction gear and center tube. The
O-rings applicable to the O-ring (III) for the catalog products described in “2.2 Parts codes of catalog
products” are listed in the table below. If an O-ring cannot be used due to the structure, seal the section
using a liquid sealant, etc.
(Reference: “4.2.5 Liquid sealant”)
O-ring (II)
JIS B 2401: 2012, SAE AS568
O-ring (III)
JIS B 2401 : 2012
